Description

Security researcher miaubiz used the Address Sanitizer tool
to discover a crash in WebGL rendering when memory is freed that has not
previously been allocated. This issue only affects Linux users who have Intel
Mesa graphics drivers. The resulting crash could be potentially exploitable.

In general these flaws cannot be exploited through email in the
Thunderbird and SeaMonkey products because scripting is disabled, but are
potentially a risk in browser or browser-like contexts in those products.